Hello;
I've been fascinated with vapor-phase cooled amps ever
since I was a kid and read the article in 'QST' (~1965)
on 'The Stanley Steamer'.
It used an EIMAC 4CX1500 that had the anode cooler
converted to a 'pineapple' design for efficient cooling
by 'boiling-water'.
I believe that it was probably the
forerunner to the Alpha PA70V.
Does anyone know of any design specs
on the design of the 'pineapple' structure ?
I've gone through some old tube manuals, plus done
some searching-on-the-Web, but all that I've found
are a few pictures that show some big shortwave
tubes with the 'pineapple' cooling structure but no
design specs/papers.
I think it'd be fun to take a small external anode tube
(and cheap if it got broke!), remove the air cooled
anode fins and attach a 'boiler'.
Comments would be appreciated.
Paul, WB5AGF
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